First post. Nice to be on-board with such a knowledgeable community!

I apologize if this has been covered before, but I wanted to know what you Yixing aficionados thought about whether or not an "entry level" pot will have any of the benefits that Yixing is famous for. In other words, if I was to spend $40 to $80 on a Yixing pot from Yunnan or Rishi (two companies which seem to be widely esteemed at this price point), and use the pot only for brewing similar oolongs, will I see/taste any of the wonderful effects Yixing is famous for when compared to a plain 'ol glazed clay or ceramic pot?
The reason I ask is this: From searching the forums here for info, I have noticed some common themes surrounding Yixing clay, one of which being the general belief that all the truly "good" clay was used up more or less by the 1960's. Another common belief (and common sense in general) would be that $120 - $150 should buy me a much nicer pot than I could get at Yunnan or Rishi.
I really enjoy oolongs, and am starting to get more into them, but my enameled Iwachu Tetsubin that I have been using seems to make them a bit flat tasting. If a $40 dollar Yixing pot wouldn't possess any of that famous "magic", I'd rather just get a Tokoname kyusu now, or save my money for the "real thing" perhaps one day down the line. On the other hand, if it would show me some of the benefits, I would like to make the relatively small investment as a first step into the Yixing world.
Of course I understand this is all subjective in the first place, but at the very least I figure it could spark some good debate.
